Linarite and Pyromorphite Physical Properties

Linarite

Pyromorphite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.356.5-7.1

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

Perfect on {100}, imperfect on {001}

Imperfect- [10 1 1]

1.7 Mohs Hardness

2.53.5-4

2 10

1.8 Chemical Composition

PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

Linarite and Pyromorphite Chemical Formula

While comparing Linarite and Pyromorphite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Linarite and Pyromorphite chemical formula.

Chemical formula of Linarite- PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Linarite and Pyromorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Linarite and Pyromorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Linarite and Pyromorphite Optical Properties during the identification of gemstone. Specific gravity of Linarite is 6.5-7.1 whereas that of Pyromorphite is 6.5-7.1.